[7] Drawn to the possibilities afforded by this emerging technology,[5] he began experimenting in the mid-1970s to develop and create a personal guitar synthesizer in 1980 which he featured in live performances and album releases.

Taking full advantage of the computer's programmable filter and the onboard Sound Interface Device (SID), The Composer was designed to produce synth effects beyond that of his guitar synthesizer.

[3] In total, Kawasaki made four programs using SuperMon (a tool created by Jim Butterfield[11]) that he released commercially on 5¼-inch floppy[2] for $29.95–$49.95 (equivalent to $91.62–$152.8 in 2023)[12] each as well as an unpublished 8-track real-time MIDI recorder called Midi-Workstation.

[3] The program came with a software version of a techno track by Kawasaki entitled "Satellite Station", and it allowed a user to select notes to be played and create songs that could then be saved.

The review noted that the Sound Editing Page in "The Composer" module was the most important of the two discs, that the documentation was superb, and concluded that Kawasaki Synthesizer is "reasonably priced, brilliantly programmed, [and] attractively packaged".